The original implementation had a few silly bugs in it that meant that data was
not being used only on the instance of the class that it was appropriate for
(one of the traps when using class-level things). No more!
Thanks to Justin Bronn and Alex Gaynor for the patch.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@10382 bcc190cf-cafb-0310-a4f2-bffc1f526a37
* Laid foundations for SpatiaLite support in `GeoQuerySet`, `GeoWhereNode` and the tests.
* Added the `Collect` aggregate for PostGIS (still needs tests).
* Oracle now goes to 11.
* The backend-specific `SpatialRefSys` and `GeometryColumns` models are now attributes of `SpatialBackend`.
* Renamed `GeometryField` attributes to be public that were private (e.g., `_srid` -> `srid` and `_geom` -> `geom_type`).
* Renamed `create_test_db` to `create_test_spatial_db`.
* Removed the legacy classes `GeoMixin` and `GeoQ`.
* Removed evil `\` from spatial backend fields.
* Moved shapefile data from `tests/layermap` to `tests/data`.
Fixed#9794. Refs #9686.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@10197 bcc190cf-cafb-0310-a4f2-bffc1f526a37